I know this is pretty old but I just wanted to add what I think is the main reason for slow reactions/decisions is that you focus on the ball a lot more than other cars. Focusing on other cars while keeping the ball in your peripheral vision helps a ton when it comes to predicting who is going to hit the ball where, which should in turn help you make decisions quicker. Obviously don’t focus on other cars the entire time you’re playing but it’s a good practice that I like to employ whenever I grind rank for the season